Method of splitting or severing glass cylinders.



l 1. WATERLOO `-& (LMCQMAIN. METHOD of summe ola sfvemm; GLASS cYL'mp'Es'. APPLlcAT'loN man JUNE 5. |916. neupwnn JAN. 2a. 191g.

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UNITED STATES PATENT OEEIOE.

- JOHN WATERLOO AND OOTAvE JAOOMAIN, OE' NEW EAGLE, PENNSYLVANIA, i

ASsIGNoRS To WINDOW GLASS MACHINE COMPANY, OP PITTSBURGH, PENN- sYLvANIA, A CORPORATION OP NEW JERSEY.

METHOD OF SPLITTING Rv SEVERING GLASS CYLINDERS.

Specification of Letters Patent.

Patented Sept. 3, 1918.

Application led June 5, 1916, Serial No. 101,655. Renewed .1anuary428, 1918. Serial No. 214,249.

To all whom t may concern:

Be it known that we, JOHN VATERLOO and OOTAVE JACQMAIN, both 'citizens of the United States, residing lat New Eagle, Washington county, Pennsylvania, have in vented a new and useful Improvement in Methods of Splitting Or Severing .Glass Cylinders, of which the following is a full, clear, and exact description, reference being' had to the accompanying drawings, forming part of this specification, in which-,-

Figure 1 is a side elevation, partly in section of the cylinder and support, and show-U ing the cut-ting apparatus. Fig. 2 is a cross section on the line II-II of Fig. 1, and

`Fig. 3 is a sectional detail view of one 'form of cutting apparatus which may be Our inventlon ,relates 'to the splitting or severing of glass cylinders in the manufacture of window glass. The cap end of these cylinders, whether blown by hand or drawn by machines, is capped od and the roller'is then split lengthwise. Long machine drawn cylindersmust also be severed into lengths and these lengthssplit longitudmally before taking to the flattening oven.

vao

'-the cylinder at this point.

Heretofore thecapping Oil has been carried out usually by electrical crack-off tools having a' wire wrapped around the cylinder at the desired point for severing, and then heated by the electric current to sever Thesev severed lengths are then laid on suitable horses which support them around the bottom porl tion of the horizontal cylinder, and a hot iron. is then drawn by the operator yalong the central part of the lower portion of the cylinder until it cracks from one end to the;

other, this being known as splitting,

Many attempts have been made to use a diamond or other cutting tool in splitting,

free from the support or Supports.

The invention consists generally in suspending the cylinder or roller by its upper portion, the lower portion hanging down n lVhen the cylinder is Split along its lower portion by runningl the diamond along its interior, the overhead suspension practically prevents bursting or irregular cracking ahead ofv the diamond or split-ting tool. The

strains present in the interior portion of thesecylinders appear to have been the cause for the diiiiculty heretofore experienced 1n splitting them when bottom-supported, and the overhead supporting seems to destroy the deleterious effect of these strains during .the operation.

In the drawings, 2 represents a'stationary side support, and 3 an merli-.inging rod or bar, which may be either of iron, wood, or other desirable material, and over which the roller l is slid.

lith the rollei` thus hanging on this interior overhead support, the diamond or other cutting tool is drawn along the bottom portion from one end to the other, thus splitting the cylinder.

In practice, we prefer to use the tool shown inthe figures, wherein 5 represents a long handle, to the end of which is secured a carriage 6 shown as consisting of an .iron or steel loop.4 Thls carriage has a series of registeringholes 7 acting as bearings for a shaft` 8 having wheels 9 which are preferably rubber'covered. The wheels and axle may be changed -to anyof the holes, as may be most. desirable. the legs of the strap is a diamond carrying lever 10 swinging on suitable trunnions 11, shown as formed of set screws extending through the sides of the strap, and the forward end of thi-s lever is preferably spring pressed downwardly by a spring 12 connected to its rear 'portion and having an adjustable connection 13 with a'support 14 mounted on a yokel. The diamond holder 16 is secured to the front end of the lever 'and may be of any desirable type.

17 .is an adjustable guide, shown as formed .of vertically adjustab@ wooden strips which` Also mounted between may be clamped :by screws 18 and which rest on the bottom of the cylinder as the tool is drawn out dring ,the cutting. 19 is va lubrica ,ng reservoir from which.` lubricant feeds through a tube 2O preferably having a Wick at the endto supply lubri-vv cant to the diamond or other cut-ting device.

- angular position, as shown in'dotted lines roller or cylinder,

from our inventlon.

4desired in Fig. 2. The carriage is then tipped into its normal position, shown 1n full hnes, with the diamond resting on the bottom of they cylinder, and the tool is then drawn outwardly to crack the glass along the bottom.

After ene glass has thus been cut, it may be tapped on the under side and one edge will usually spring over the other. The rolleris then taken ott of th'e support and is ready for lattening. It may also be split along'another portion thereof to divide it into sections.

When it is desired to split the cylinder into two or three segments, this has heretofore been done by a heated irondrawn along the bottom. Ve have discovered that atter the cylinder or roller has once been split longitudinally the tension on the interior thereof appea'rs to be removed so that the cylinder may be turned to bring another unsplit portion at the bottom, and this bottoni may then be supported and split longitudinally by the diamond or other cutting tool while thus bottom supported. .This cannot be done, however, until after the cylinder has once been split.

In case the cylinder is to thus be re-cut a second or'third time into shawls, the cylinder'orroller may be taken oti'i'rom the overhead support and laid on a suitable horse to bottom-support it along an uncut port-ion of the cylinder, and the diamond tool may then be used in the same manner as before along this bottom portion.

Instead of removing the cylinder, a bottom-support may be lifted up againstit and .the cylinder turned to bring a fresh uncut portion` at the bottom.` In the case of a second or third cut the vWeight must be taken ott' the upper portions and supported on the lower uncut portions of the cylinder, just i the opposite of thetrst cut with a vdiamond or similar cutting` tool.

by usingy longer internal supports and running. the diamond cutting tool around thev inside (,-ircun'iference of the'cylinder at the oint;A and `by the term splitting in our clziims2 ive intend to cover either cutting longitudinally lor circumferentially. l

I Many variations may bemade in the cuttmv tool used', the method of supporting the etc., v1thout departing it by its upper side portion at an angle to the vert-ical, and split-ting it.

2. The method of splitting' glass Acylinders or rollers, which consists in supporting ythem by theirupper side portions, and splitting them along their lower port-ions.

3. The method ofy splitting a glass cylinder or roller, consisting in sliding the cylinder over the projecting end of a horizontally extending support and then splitting it.

el. The method of splitting a glass cylinder consisting in slidingthe cylinderover the projecting end of a horizontally extending support and then splitting it longitudi-- nally7 along its lower portion. f

The method ot' re-splitting a glass cylinder or roller, consisting in supportingits lower portion and running a cutting tool along said portion.

6. The method of re-splitting a glass cylinder or roller, consisting in supporting the split cylinder or roller with its splitportion above and vits unsplit port-ion underneath and bottom-supported, and running a cnt.- ting tool along-the interior of said bottoni supported portion.

T. The method of splitting a' glass cylinder or roller, which consists in hanging the roller on a longitudinally extending overhead support, and then splitting it along a line which is approximately opposite the line of support.

' S. The method ot' splitting a glass c vlinder or roller, which consists in hanging the 'roller on a longitudinally extending overhead suppo1t.tlien splitting it along a line ivhich is vapproxinlately opposite the line of support. then turning the cylinder to bring an unsplit portion to said splitting position, and again splitting.

9. The method ot splitting a glass cylinlder or roller. -ivhich consists in hanging the roller on a longitudinally. extend-ing overhead support, then splitting it along a line which is approximately opposite the line ot support, then tefrning the cylinder to bring an unsplit portion to said splitting position. again splitting. then shitting the point ot' support to the bottom ot' the cylinder. again turning it and making another split alongTl the'l bottoni portion of the cylinder.A

In testimony ivhereot, we have hereunto set our hands.

JOHN lVATlI 1L( OCTAYE JCQMI.

W'itnesses:

GEO. B. BmaMIXG, Rom'. J. lYuxLnx. 

